Super mini size with pulling line: The machine size is 0.66*0.55 inch, it can hide well in your ear. Pulling line can help you take machine out. Hearing amplifier is belongs to electronic product,it is normal if you hear noise. Please be patient to adapter to it. First week: Wearing in quiet enviroment. If you can't hear any sound, please don't give up. Second week: You can try to go to park. Third week: You can go to public,but remember please don't stay too long. Fourth week: You can go far.

70H-100H battery working time: 2PCS Zinc battery A10 imported from UK, long using time. 5pcs ear tips(4 size) you can choose the right size according your ear canel. 1pcs adjustable bar, you can change volume throught it easily. Adjustable stick must be aligned with amplifier position.1pcs English manual book.Silica gel packing box avoid damage during shipment. Gift packing box is good to send to family and friends.

For left/right ear, slight/moderate hearing loss: There 5 size ear tips in the package. Please chose the right one, make sure ear tip is tight with your ear. For noise reduction, another solution is turn down the hearing aid volume as possible. Turn to 1-2 volume level is enough for first time wearing. If can't hear clearly, you can turn up volume slowly. We suggest you to wear 8 hours/ day, you will feel comfortable after 2-3 weeks.

This analog hearing machine is for kids/adults.You can use adjust bar to change volume. It is much conveniet for old people to use. 1.Connect ear tips with machine, please make sure ear tips is really tight with ear cannel.2.Insert battery A10 in right position.3.Turn volume from level 1-2, after adapter to it, you can turn to high volume slowly. Because this machine is small, so the working voice is not loudly.4.Please turn down volume into level1 to reduce battery cost.

FDA certification: It is certified by medical institutions around the world. For 1 year warranty, please contact us if you have problems. You can use brush to clean arround ear cannel, volume control buttom, battery compartment or other tiny thing. Gently wipe the hearing aid with a soft cloth. Please don't use solvents, cleaning fluids, or oils to clean your hearing aids. Remember to turn off when no use, otherwise a buzzing sound will be generated, which may cause unnecessary loss.